Improvement in heating-drums



vVJ..HALL.

Improvement in Heating-Drums.

No. 131,875. Patentedvoct. 1, 1372.-

`ing on `the top of the stove.

rrED TATES PATENT JOSEPH HALL, or PLEASANT HILL, ILLINOIS.

IMPROVEMENT IN HEATING-DRUMS.

Specification forming part of Letters Patent No. 131,875, dated October 1, 1872.

To all whom it may concern:

Be it known that I, JOSEPH HALL, of Pleas ant Hill, in the. county OfMcLean and in the State of Illinois, have invented certain new and useful Improvements in Heating-Drums;

` and do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying draw ing and to the letters of reference marked thereon, making a part of this speciiication.

In order to enable others Skilled in the art to which my invention appertains to make and use thesame, I will now proceed to describe its construction and operation, referring to the annexed drawing, in whichl Figure lis a longitudinal vertical section,

and Fig. 2 is a horizontal section, of my invention.

A represents the Outer drum, inthe bottom of which isan opening, a, to be placed over the stove-pipe collar on a stove, the drum rest- Through this opening the fire, heat, and smoke are received from the stove. .B represents the inner drum, which is corrugated longitudinally around its entire circumierence, and which extends from near the bottom to near the top of the Outer drum A. i Cold air is let into the inner drum at or near the bottom by means of a pipe, C, passing through the outer drum and extending downward to near the iloor, or corninunicat` ing with a pipe leading from the outside of the building. The air heated in the drum B is discharged into the room through the pipe D at the top, or by an aperture in the side near the top with a pipe from said aperture through the Outer drum. The re, heat, and smoke completely envelope the inner drum, passing Aentirely around the'same O11`all sides, as well as top and-bottom, and then out through the smoke-pipe E. The inner drum B is provided with two, three, or more shelves or breakers, G G, on the inside, arranged as shown, to prevent the passage of the cold air through the inner drum before it is sufficiently heated. These shelves or breakers G G are corrugated, asshown, which, in connection with the corrugated surfaces ofthe drum B, increases the Y heating-surfaces very materially without increasing the space to be occupied by the drum.

This air-heating apparatus may be maiiufactured separate from any stove, and used upon or in connection with any stove by simply removing the stove-pipe and connecting the stove-pipe hole in the stove with the aperture a in the bottom of the outer drum. Having thus fully'described my invention,

what I claim as new, and desire to securel byV Letters Patent, is-

The combination of the outer drum A with apertures a and E, the interior corrugated drum B with inside corrugated shelves or breakers Gr G and the pipes O and D, all sub- K stantially as and for the purposes herein Set forth. l

In testimony that I claim the foregoing I Witnesses n J. M. MASON, EDM. F. BROWN. 

